Trial of a CAD/CAM system for fabricating complete dentures (original) (raw)
Related papers
The Journal of Prosthetic Dentistry, 2012
The clinical impression procedures described in this article provide a method of recording the morphology of the intaglio and cameo surfaces of complete denture bases and also identify muscular and phonetic locations for the prosthetic teeth. When the CAD/CAM technology for fabricating complete dentures becomes commercially available, it will be possible to scan the denture base morphology and tooth positions recorded with this technique and import those data into a virtual tooth arrangement program where teeth can be articulated and then export the data to a milling device for the fabrication of the complete dentures. A prototype 3-D tooth arrangement program is described in this article that serves as an example of the type of program than can be used to arrange prosthetic teeth virtually as part of the overall CAD/CAM fabrication of complete dentures. (J Prosthet Dent 2012;107:34-46)
Use of CAD-CAM technology for the fabrication of complete dentures: An alternative technique
Computer-aided design and computer-aided manufacturing (CAD-CAM) technology is available for the fabrication of complete dentures as an alternative to conventional fabrication techniques. This report describes a work flow for a technique that combines the use of conventional impressions and maxillomandibular relationship records with CAD-CAM technology for the fabrication of maxillary and mandibular complete dentures.
CAD/CAM complete dentures: a review of two commercial fabrication systems
Journal of the California Dental Association, 2013
The use of computer-aided design and computer-aided manufacturing (CAD/CAM) has become available for complete dentures through the AvaDent and Dentca systems. AvaDent uses laser scanning and computer technology. Teeth are arranged and bases formed using proprietary software.The bases are milled from prepolymerized pucks of resin. Dentca uses computer software to produce virtual maxillary and mandibular edentulous ridges, arrange the teeth and form bases. The dentures are fabricated using a conventional processing technique.
CAD/CAM Complete Denture Systems and Physical Properties: A Review of the Literature
Journal of Prosthodontics, 2021
Purpose: CAD/CAM complete dentures have increased in popularity and a wide variety of systems are currently available. These prostheses present many advantages for clinicians, technicians and patients. Subtractive manufacturing is used by most of the available systems while a few manufacturers use an additive manufacturing technique. This article describes the currently available systems and materials available for the fabrication of CAD/CAM complete dentures and reviews the literature relative to their physical properties. Methods: A comprehensive review of the literature was completed to enumerate the currently available techniques to fabricate CAD/CAM complete dentures and discuss their physical properties. A search of English language peer-reviewed literature was undertaken This article is protected by copyright. All rights reserved. 3 using MEDLINE and PubMed on research articles published between 2000 and 2019. A hand search of relevant dental journals was also completed. Results: The literature indicates the physical properties of CAD/CAM milled poly(methylmethacrylate) or PMMA as it is commonly described is superior to conventionally processed PMMA for the fabrication of complete dentures. Conclusion: The incorporation of CAD/CAM technology into complete denture design and fabrication streamlines the clinical and laboratory processes and provides improved physical properties that enhance denture quality. An important factor in the emergence of a completely new technology for making complete dentures was the use of computer-aided design (CAD) and computer-aided manufacturing (CAM) into many other aspects of dentistry. 1-4 That extensive use of CAD/CAM processes along with a shortage of qualified dental laboratory technicians with expertise in removable prosthodontics, 5 led both clinicians and dental laboratory technicians to explore the use of CAD/CAM technology for the fabrication of digital complete dentures. According to the Glossary of Digital Dental Terms, a digital denture is a complete denture created by or through automation using CAD, CAM and CAE (computer-aided engineering). 6 The term CAE is defined as the field of engineering where the accumulation and analysis of data is applied to design processes used to create dental prostheses. 7 Laboratory studies Maeda et al. 8 were the first to apply the 3D laser lithography (LL) technique to assess the use of a computer-aided system to design and fabricate complete dentures. They created a This article is protected by copyright. All rights reserved. 4 plastic shell of the dentition and a record base from photopolymerizing resin and the denture teeth were then fabricated using tooth colored composite resin material. Three years later, Kuwahata et al. 9 improved the duplication technique of a removable prosthesis using a computerized numerical control (CNC) machine to mill a denture using modeling wax. In their conclusion, they admitted that the technique still needs some enhancement. Another study incorporated scans of record bases and wax occlusion rims provided by a dentist into a CAD software program. They designed the virtual dentures (bases and teeth) and printed the
Complete denture fabrication with CAD/CAM record bases
One of the primary goals of new materials and processes for complete denture fabrication has been to reduce polymerization shrinkage. The introduction of computer-aided design and computeraided manufacturing (CAD/CAM) technology into complete denture fabrication has eliminated polymerization shrinkage in the definitive denture. The use of CAD/CAM record bases for complete denture fabrication can provide a better-fitting denture with fewer postprocessing occlusal errors. (J Prosthet Dent 2015;114:493-497)
Comparison of denture tooth movement between CAD-CAM and conventional fabrication techniques
The Journal of prosthetic dentistry, 2017
Data comparing the denture tooth movement of computer-aided design and computer-aided manufacturing (CAD-CAM) and conventional denture processing techniques are lacking. The purpose of this in vitro study was to compare the denture tooth movement of pack-and-press, fluid resin, injection, CAD-CAM-bonded, and CAD-CAM monolithic techniques for fabricating dentures to determine which process produces the most accurate and reproducible prosthesis. A total of 50 dentures were evaluated, 10 for each of the 5 groups. A master denture was fabricated and milled from prepolymerized poly(methyl methacrylate). For the conventional processing techniques (pack-and-press, fluid resin, and injection) a polyvinyl siloxane putty mold of the master denture was made in which denture teeth were placed and molten wax injected. The cameo surface of each wax-festooned denture was laser scanned, resulting in a standard tessellation language (STL) format file. The CAD-CAM dentures included 2 subgroups: CAD-C...
Advantages of CAD/CAM versus Conventional Complete Dentures - A Review
Open Access Macedonian Journal of Medical Sciences
BACKGROUND: The introduction and evolution of CAD/CAM technology into complete dentures fabrication brought high expectations in improving disadvantages associated with conventional methods.AIM: The purpose of this review was to analyse the existing literature on computer-engineered complete dentures and to determine their advantages over the conventional dentures.MATERIAL AND METHODS: An electronic search of the English literature from January 1994 to March 2018 was performed in PubMed/MEDLINE, using the following keywords: CAD/CAM complete dentures, computer-engineered complete dentures, complete digital dentures, complete milled dentures, and rapid prototyping dentures.RESULTS: A total of 179 English language titles were obtained from the database, and 14 were relevant to fulfil the purpose of this review. A review of 7 articles is summarized in 2 tables for presenting a comparison between CAD/CAM and conventional dentures in clinical and laboratory studies.CONCLUSION: Following ...
CAD-CAM the future of digital dentistry: a review
Innovative Publication, 2016
CAD/CAM called as Computer Aided Design/Computer Aided Manufacturing was introduced to dentistry in the mid-1980s. CAD/CAM restoration fabrication is available as both chairside and chair side—laboratory integrated. In the past 20 years, there have been new developments in dental materials and computer technology which has led to the success of CAD/CAM technology. The development of information technology has helped us to devise and build 3D models, based on virtual prototypes with the help of a computer numerical control (CNC) device. Computers can now be used to create accurately detailed projects that can be assessed from different perspectives in a process known as computer aided design (CAD). To materialize virtual objects using CAD, a computer-aided manufacturing (CAM) process has been developed. CAM operates using a machine connected to a computer to convert a virtual file into a real object. CAD/CAM technology employs a non-invasive three dimensional (3D) imaging system. This paper gives you a brief knowledge about the types and uses of CAD/CAM technology.
Fit Accuracy of Complete Denture Base Fabricated by CAD/CAM Milling and 3D-Printing Methods
European Journal of Dentistry, 2022
Objective Digital complete denture fabrication can be accomplished by either milling or three-dimensional (3D)-printing approach in which minimal distortion during processing contributes to effective denture base adaption, which leads to good denture retention. The purpose of this study was to compare the fit accuracy of milled and 3D-printed complete denture bases. Materials and Methods The reference edentulous maxillary arch model was scanned to generate virtual denture bases using computer-aided manufacturing software that exports as standard tessellation language files. Denture bases were constructed using a milling and 3D-printing technique using digital light processing method (n ¼ 10). Intaglio surfaces of denture bases were scanned and superimposed on the reference model. The fit accuracy was quantified as root mean square error and evaluated statistically using independent t-test comparisons with a significance level of 0.05. Results Milled denture bases were significantly more accurate in adaptation than 3Dprinted dentures in the overall intaglio area and primary bearing area of denture bases. 3D-printed denture bases demonstrated significantly greater accuracy in adaptation than milled denture bases in the peripheral/posterior palatal seal area. Conclusion Milled denture bases fit better in the overall and primary stress-bearing areas than 3D-printed dentures, while 3D-printed dentures appeared more accurate in the peripheral seal area, which had a minor undercut that is not suitable for using milling technology.